USGS - science for a changing world

Northern Prairie Wildlife Research Center

  Home About NPWRC Our Science Staff Employment Contacts Common Questions About the Site

Checklist of Amphibian Species and Identification Guide

Canadian Toad, Bufo hemiophrys
Wyoming Toad, Bufo baxteri

canadian toad ventral view of canadian toad

The Canadian Toad is a medium sized toad attaining lengths around 3 inches. The color of these can be variable, ranging from brown to green and sometimes even reddish. Its warts are brown or reddish. The most distinctive feature of this species is its interorbital cranial ridges or crests. These unite to form a unique raised "boss" (prominent bump) between the eyes. This is also the case with the Great Plains Toad, but in this species the crests unite on the snout.

Often times the parotid glands on Canadian Toads may be hard to discern due to indistinct boundaries, particularly on dark individuals most commonly seen during the spring breeding season. The ventral surface of the Canadian Toad is often spotted against a light background. The Canadian Toad is one of the few species of amphibians with a predominantly Canadian distribution.
The Wyoming Toad, B. baxteri (not shown), was previously considered a subspecies of the Canadian Toad (B. h. baxteri). This species, found along the Laramie and Big Rivers, is federally listed as endangered. The Wyoming Toad looks very silmilar to the Canadian Toad except in that it has a narrower middorsal stripe.

canadian toad
canadian toad Canadian Toad and Wyoming Toad Ranges

Notice:  All images contained hereafter are the property of the said photographer. They are not to be reproduced, copied, printed, stored, or distributed without written permission of the photographer.

Return to checklist:   family/species   species only
Return to Contents

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo logo U.S. Department of the Interior | U.S. Geological Survey
Page Contact Information: Webmaster
Page Last Modified: Saturday, 02-Feb-2013 05:01:51 EST
Sioux Falls, SD [sdww54]